Pneumatic tire.



PATENTED JULY 28, 1903.

H. MARKS. PNEUMATIC TIRE.

APPLICATION FILED APR. 2, 1902.

N0 MODEL.

3. 734,915, Patented July 28, 1903.

UNTTED STATES PATENT OFFICE.

ARTHUR H. MARKS, OF AKRON, OHIO, ASSIGNOR TO THE DIAMOND RUBBER COMPANY, OF AKRON, OHIO, A CORPORATION OF WEST VIRGINIA.

SPECIFICATION forming part of Letters Patent No. 734,915, dated July 28, 1903. Application filed April 2, 1902. Serial No. 101,100. (No model.)

To all whom it may concern: yond the rim, are bent so as to overhang the Be it known that I, ARTHUR H. MARKS, a same, as shown, and thereby form recesses, to citizen ofthe United States,residing at Akron, which the ribs or on the tire-sheath are fitted. in the county of Summit and State of Ohio, It will be observed that the peripheries of 5 have invented a certain new and useful Imthe flanges d of the plates D D are in subprovement in Pneumatic Tires, of which the stantially the same plane as the outer surfollowing is a full, clear, and exact dcscripface of the flange C. By this construction tion, reference being had to the accompanythe cutting of the tire by the flanges din case ing drawings. the tire should become deflated, as by reason to Not a few very serious accidents to autoof a puncture, is prevented, since the thickmobilists have occurred from using the form est portion of the outer sheath of the tire of clencher-tires in which the tire-sheath is will bear against the flange O, thereby preheld in engagement with the flanges of the venting the thin portions of the tire adjacent rim by the pressure of the inflated inner tube. to the flanges d from hearing againstthe :5 When an automobile equipped with such peripheries of said flanges and being cut by tires is in rapid motion and one of the tires the same. is punctured, the tires not infrequently are The flange C is of such Width and thickness drawn or pushed loose from the rim,beoause that it substantially fills the space between there is nothing to hold it on, and it is in this so much of the proximate edges of the sheath 7o 20 manner that the accidents referred to have as lies within said flanges d.

taken place. To connect the tire onto the rim in the con- The object of this invention is to provide struction shown in Fig. 2, one of the plates novel means wholly independent of the in- D D is removed, and one ribbed edge of the flatable inner tube for detachably holdinga sheath is placed in the recess between the 25 double-tube tire on the wheel; and the inrim and the flange d of the other plate. The vention consistsin the construction and comflange O is then slipped onto the rim to the bination of parts hereinafter described, and position shown, the inner tube'G is inserted, pointed out definitely in the claims. the other edge of the sheath is then moved In the drawings, Figure 1 is a side view of in against the rim and the flange, and finally 30 a wheel-rim and tire constructed in accordthe other side plate D is placed in the posiance with my invention. Fig. 2 is a transtion shown in engagement with the rib or upon verse sectional View of the preferred form of the sheath, and both plates may be fastened such invention, and Fig. 3 is a transverse to the rim by bolts F. Of course if the flange sectional view of a modified construction. O is part of the wheel-rim both plates D D 3g Referring to the parts by letters, A repremust be removed in order to attach the sheath sents the outer sheath of the tire,having, as to the rim. 3 is customary, external ribs a at its edges. It will be seen that the tire-sheath is locked B represents the wheel-rim. upon the rim by means which are wholly in- O represents what may be termed a dependent of the inflatable tube G. The 4o flange, which circles the wheel-rim extersheath cannot be disconnected from the rim nally and occupies a position midway beeven when the tube G is whollyinflated, and tween its edges. This flange may be a part therefore it is not possible for the tire to fly of the wheel-rim, as shown in Fig. 3; but from the rim of the wheel in rapid motion if preferably it is an independent piece encirthe tire is punctured. To detach the tire from 45 cling but not fastened to the rim, as shown the rim for any reason, one or both of the in Fig. 2, in which latter case it may be made plates D D must be removed. of any suitable material. Having described my invention, I claim D D represent annular plates which are se- 1. In a detachable double-tube pneumatic cured to the sides of the rim, and they may tire, the combination ofa wheel-rim provided rco 50 each be made of one piece or a plurality of with a centrally-arranged peripheral flange, sections. Their edges d, which extend beplates removably secured to said rim extending along the sides of the same and bent inwardly to form flanges, the peripheries of the flanged portions of said plates being in substantially the plane of the outer surface of the peripheral rim-flange, a tire-sheath having ribs or beads adapted to fit within the recesses formed between said peripheral rim flange and the flanges of the plates, and an inflatable tube within said sheath, substantially as described.

2. In a detachable double-tube pneumatic tire, the combination of a rim provided with a centrally-arranged removable peripheral flange, flat plates extending along the opposite sides ofsaid rim and removably secured there- 

